C07F 9/568
Four-membered rings
C07F9/568 (Four-membered rings) appears on 184 US grants and 34 published applications in this corpus.
Search patents in C07F- Granted patents
- 184
- Published applications
- 34
- Assignees
- 52
- Inventors
- 245
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 11 | 0 |
| 1981 | 17 | 0 |
| 1982 | 12 | 0 |
| 1983 | 12 | 0 |
| 1984 | 16 | 0 |
| 1985 | 14 | 0 |
| 1986 | 4 | 0 |
| 1987 | 14 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 4 |
| 2003 | 3 | 2 |
| 2004 | 2 | 4 |
| 2005 | 3 | 5 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 2 | 3 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 3 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Solid supports and phosphoramidite building blocks for oligonucleotide conjugates15 Sep 2026US 12,735,387 B2AM Chemicals LLC
- TRPV4 receptor ligands11 Aug 2026US 12,703,680 B2University of Utah Research Foundation
- GPR40 agonists1 Apr 2025US 12,264,171 B2Kallyope, Inc.
- Lysophosphatidic acid derivative31 Oct 2023US 11,802,135 B2Mitsubishi Tanabe Pharma Corporation
- Solid supports and phosphoramidite building blocks for oligonucleotide conjugates20 Sep 2022US 11,447,451 B2AM Chemicals LLC
- Haloalkyl sulfonanilide compound and herbicide containing the same18 Sep 2025US 2025/0289788 A1Sds Biotech K. K.
- Gpr40 agonists4 Sep 2025US 2025/0276989 A1Kallyope, Inc.
- Solid supports and phosphoramidite building blocks for oligonucleotide conjugates25 May 2023US 2023/0159458 A1AM Chemicals LLC
- Novel lysophosphatidic acid derivative11 May 2023US 2023/0146210 A1Mitsubishi Tanabe Pharma Corporation
- Trpv4 receptor ligands26 Jan 2023US 2023/0026696 A1University of Utah Research Foundation
Most cited
By later US patents
- .beta.-Lactam antibacterial agents, their use in pharmaceutical compositions, and intermediates136US 4,282,236 ABeecham Group Limited · 1981
- 1-, 6- And 2-substituted-1-carba-2-penem-3-carboxylic acids72US 4,260,627 AMerck & Co., Inc. · 1981
- Phosphorus containing compounds and use as hypotensives56US 4,555,506 AE. R. Squibb & Sons, Inc. · 1985
- 1-Carba-2-penem-3-carboxylic acid53US 4,543,257 AMerck & Co., Inc. · 1985
- Process for preparing 1-6-and 2-substituted-1-carba-2-penem-3-carboxylic acids51US 4,465,632 AMerck & Co., Inc. · 1984